/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:05,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:05,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:05,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:05,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:05,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:05,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:05,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:05,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:05,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:05,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:05,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:05,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:05,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:05,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:05,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:05,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:05,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:05,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:05,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:05,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:05,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:05,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:05,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:05,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:05,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:05,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:05,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:05,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:05,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:05,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:05,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:05,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:05,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:05,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:05,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:05,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:05,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:05,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:05,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:05,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:05,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:12:05,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:05,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:05,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:05,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:05,459 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:05,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:05,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:05,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:05,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:05,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:05,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:05,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:05,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:05,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:05,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:05,461 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:05,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:05,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:05,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:05,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:05,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:05,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:05,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:05,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:05,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:05,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:05,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:05,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:05,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:05,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:12:05,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:05,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:05,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:05,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:05,963 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:05,964 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 10:12:06,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63b55b2d9/00ff69ac230c497e8ff515d0031ae5e1/FLAG66b45a476 [2020-09-25 10:12:06,754 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:06,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 10:12:06,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63b55b2d9/00ff69ac230c497e8ff515d0031ae5e1/FLAG66b45a476 [2020-09-25 10:12:06,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63b55b2d9/00ff69ac230c497e8ff515d0031ae5e1 [2020-09-25 10:12:06,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:06,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:06,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:06,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:06,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:06,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:06" (1/1) ... [2020-09-25 10:12:06,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:06, skipping insertion in model container [2020-09-25 10:12:06,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:06" (1/1) ... [2020-09-25 10:12:06,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:07,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:07,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:07,633 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:07,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:07,771 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:07,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:07 WrapperNode [2020-09-25 10:12:07,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:07,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:07,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:07,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:07,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:07" (1/1) ... [2020-09-25 10:12:07,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:07" (1/1) ... [2020-09-25 10:12:07,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:07" (1/1) ... [2020-09-25 10:12:07,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:07" (1/1) ... [2020-09-25 10:12:07,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:07" (1/1) ... [2020-09-25 10:12:07,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:07" (1/1) ... [2020-09-25 10:12:07,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:07" (1/1) ... [2020-09-25 10:12:07,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:07,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:07,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:07,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:07,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:09,467 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:09,467 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:09,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:09 BoogieIcfgContainer [2020-09-25 10:12:09,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:09,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:09,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:09,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:09,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:06" (1/3) ... [2020-09-25 10:12:09,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bbc982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:09, skipping insertion in model container [2020-09-25 10:12:09,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:07" (2/3) ... [2020-09-25 10:12:09,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bbc982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:09, skipping insertion in model container [2020-09-25 10:12:09,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:09" (3/3) ... [2020-09-25 10:12:09,488 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label36.c [2020-09-25 10:12:09,500 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:09,515 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:09,539 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:09,578 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:09,578 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:09,578 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:09,578 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:09,579 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:09,579 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:09,579 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:09,579 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:09,613 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 10:12:09,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:09,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:09,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:09,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2108492313, now seen corresponding path program 1 times [2020-09-25 10:12:09,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:09,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245748315] [2020-09-25 10:12:09,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:09,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:10,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 10:12:10,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:10,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-09-25 10:12:10,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:10,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:12:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 10:12:10,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:12:10,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:10,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:10,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:10,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:12:10,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:10,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:10,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:12:10,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:10,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245748315] [2020-09-25 10:12:10,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:10,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:12:10,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634975684] [2020-09-25 10:12:10,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:12:10,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:10,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:12:10,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:12:10,870 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:12:12,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:12,917 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 10:12:12,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:12:12,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-25 10:12:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:12,943 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 10:12:12,943 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 10:12:12,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:12,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 10:12:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 10:12:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 10:12:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 10:12:13,065 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 58 [2020-09-25 10:12:13,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:13,067 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 10:12:13,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:12:13,067 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 10:12:13,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 10:12:13,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:13,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:13,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:13,076 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:13,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1346618775, now seen corresponding path program 1 times [2020-09-25 10:12:13,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:13,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756587686] [2020-09-25 10:12:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:13,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:13,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:13,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:17,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 10:12:17,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:17,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4124 [2020-09-25 10:12:17,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:17,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 10:12:17,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:17,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:17,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:17,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:12:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:17,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:17,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:17,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 10:12:17,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:17,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:17,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756587686] [2020-09-25 10:12:17,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:17,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:12:17,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422451096] [2020-09-25 10:12:17,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:12:17,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:17,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:12:17,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:12:17,729 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 10:12:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:19,697 INFO L93 Difference]: Finished difference Result 1393 states and 1707 transitions. [2020-09-25 10:12:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:12:19,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-09-25 10:12:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:19,705 INFO L225 Difference]: With dead ends: 1393 [2020-09-25 10:12:19,705 INFO L226 Difference]: Without dead ends: 863 [2020-09-25 10:12:19,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:19,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-09-25 10:12:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 851. [2020-09-25 10:12:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 10:12:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1020 transitions. [2020-09-25 10:12:19,754 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1020 transitions. Word has length 137 [2020-09-25 10:12:19,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:19,755 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1020 transitions. [2020-09-25 10:12:19,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:12:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1020 transitions. [2020-09-25 10:12:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 10:12:19,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:19,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:19,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:19,763 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:19,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:19,764 INFO L82 PathProgramCache]: Analyzing trace with hash -921428875, now seen corresponding path program 1 times [2020-09-25 10:12:19,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:19,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175535902] [2020-09-25 10:12:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:22,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:24,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 10:12:24,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:12:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:12:24,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:24,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 10:12:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:24,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:24,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:24,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:24,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:12:24,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:24,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:24,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:24,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:25,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:25,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:25,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 10:12:25,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:25,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:25,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:25,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175535902] [2020-09-25 10:12:25,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:25,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:12:25,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928037779] [2020-09-25 10:12:25,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:12:25,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:25,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:12:25,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:25,252 INFO L87 Difference]: Start difference. First operand 851 states and 1020 transitions. Second operand 8 states. [2020-09-25 10:12:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:30,728 INFO L93 Difference]: Finished difference Result 2372 states and 2903 transitions. [2020-09-25 10:12:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:30,729 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-09-25 10:12:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:30,744 INFO L225 Difference]: With dead ends: 2372 [2020-09-25 10:12:30,744 INFO L226 Difference]: Without dead ends: 1536 [2020-09-25 10:12:30,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:12:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2020-09-25 10:12:30,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1494. [2020-09-25 10:12:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-09-25 10:12:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1757 transitions. [2020-09-25 10:12:30,819 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1757 transitions. Word has length 147 [2020-09-25 10:12:30,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:30,821 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1757 transitions. [2020-09-25 10:12:30,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:30,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1757 transitions. [2020-09-25 10:12:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 10:12:30,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:30,839 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:30,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:30,840 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:30,842 INFO L82 PathProgramCache]: Analyzing trace with hash -352912224, now seen corresponding path program 1 times [2020-09-25 10:12:30,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:30,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80653520] [2020-09-25 10:12:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:30,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:33,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:35,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:35,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 10:12:35,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:12:35,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 10:12:35,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:35,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:12:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-09-25 10:12:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:36,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:36,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:36,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:36,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:36,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:12:36,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:36,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:36,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:36,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:36,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:36,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:36,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 10:12:36,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:36,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:36,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:12:36,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:12:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:36,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:36,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:12:36,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 10:12:36,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:36,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:36,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:36,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:36,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:12:36,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 10:12:36,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80653520] [2020-09-25 10:12:36,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:36,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:12:36,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105476818] [2020-09-25 10:12:36,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:12:36,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:36,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:12:36,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:12:36,669 INFO L87 Difference]: Start difference. First operand 1494 states and 1757 transitions. Second operand 9 states. [2020-09-25 10:12:39,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:39,952 INFO L93 Difference]: Finished difference Result 2742 states and 3331 transitions. [2020-09-25 10:12:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:12:39,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 217 [2020-09-25 10:12:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:39,968 INFO L225 Difference]: With dead ends: 2742 [2020-09-25 10:12:39,968 INFO L226 Difference]: Without dead ends: 1896 [2020-09-25 10:12:39,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:12:39,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2020-09-25 10:12:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1844. [2020-09-25 10:12:40,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1844 states. [2020-09-25 10:12:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2171 transitions. [2020-09-25 10:12:40,047 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2171 transitions. Word has length 217 [2020-09-25 10:12:40,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:40,047 INFO L479 AbstractCegarLoop]: Abstraction has 1844 states and 2171 transitions. [2020-09-25 10:12:40,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:12:40,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2171 transitions. [2020-09-25 10:12:40,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 10:12:40,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:40,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:40,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:40,054 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash -477888366, now seen corresponding path program 1 times [2020-09-25 10:12:40,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:40,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061914982] [2020-09-25 10:12:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:40,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:45,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 10:12:45,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:12:45,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 10:12:45,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:45,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:45,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:45,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 10:12:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:45,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:45,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:12:45,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:45,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:45,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:45,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:45,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:45,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:45,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:45,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:45,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:45,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 10:12:45,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:45,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:45,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 10:12:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:46,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:46,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:46,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-09-25 10:12:46,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:46,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:12:46,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 10:12:46,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061914982] [2020-09-25 10:12:46,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:46,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:12:46,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353318830] [2020-09-25 10:12:46,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:12:46,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:46,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:12:46,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:12:46,149 INFO L87 Difference]: Start difference. First operand 1844 states and 2171 transitions. Second operand 9 states. [2020-09-25 10:12:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:50,250 INFO L93 Difference]: Finished difference Result 3852 states and 4822 transitions. [2020-09-25 10:12:50,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:12:50,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2020-09-25 10:12:50,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:50,269 INFO L225 Difference]: With dead ends: 3852 [2020-09-25 10:12:50,269 INFO L226 Difference]: Without dead ends: 2644 [2020-09-25 10:12:50,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2020-09-25 10:12:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2455. [2020-09-25 10:12:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2455 states. [2020-09-25 10:12:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 2909 transitions. [2020-09-25 10:12:50,337 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 2909 transitions. Word has length 230 [2020-09-25 10:12:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:50,338 INFO L479 AbstractCegarLoop]: Abstraction has 2455 states and 2909 transitions. [2020-09-25 10:12:50,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:12:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 2909 transitions. [2020-09-25 10:12:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 10:12:50,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:50,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:50,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:50,344 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:50,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:50,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1691089535, now seen corresponding path program 1 times [2020-09-25 10:12:50,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:50,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954431314] [2020-09-25 10:12:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:50,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:53,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:54,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking...